From: gwl <gwl@rock-chips.com>
Date: Wed, 26 Mar 2014 05:20:13 +0000 (+0800)
Subject: Wifi:BT: enable uart0 for bt, add wifi reference voltage.
X-Git-Tag: firefly_0821_release~5823
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8cbfe6bdc824e4772ba0f4e87a0dce56c849b41d;p=firefly-linux-kernel-4.4.55.git

Wifi:BT: enable uart0 for bt, add wifi reference voltage.
---

diff --git a/arch/arm/boot/dts/rk3288-tb.dts b/arch/arm/boot/dts/rk3288-tb.dts
index d5c9e9e3468a..605fafda29ec 100755
--- a/arch/arm/boot/dts/rk3288-tb.dts
+++ b/arch/arm/boot/dts/rk3288-tb.dts
@@ -12,7 +12,7 @@
         compatible = "wlan-platdata";
 
         wifi_chip_type = "";
-        sdio_vref = <28000>;
+        sdio_vref = <1800>; //1800mv or 3300mv
 
         //power_ctrl_by_pmu;
         pmu_regulator = "act_ldo3";
@@ -293,6 +293,12 @@
 	*/
 };
 
+&uart_bt {
+        status = "okay";
+        dma-names = "!tx", "!rx";
+        pinctrl-0 = <&uart0_xfer &uart0_cts>;
+};
+
 &i2c0 {
 	status = "okay";
 	rk808: rk808@1b {
diff --git a/net/rfkill/rfkill-wlan.c b/net/rfkill/rfkill-wlan.c
index b87bdd8e08b8..e1b3a3c7ff72 100755
--- a/net/rfkill/rfkill-wlan.c
+++ b/net/rfkill/rfkill-wlan.c
@@ -31,6 +31,7 @@
 #include <linux/proc_fs.h>
 #include <linux/uaccess.h>
 #include <linux/gpio.h>
+#include <linux/rockchip/iomap.h>
 #include <dt-bindings/gpio/gpio.h>
 #ifdef CONFIG_OF
 #include <linux/of.h>
@@ -325,6 +326,7 @@ u8 wifi_custom_mac_addr[6] = {0,0,0,0,0,0};
 extern char GetSNSectorInfo(char * pbuf);
 int rockchip_wifi_mac_addr(unsigned char *buf)
 {
+    return -1;
     char mac_buf[20] = {0};
     LOG("%s: enter.\n", __func__);
 
@@ -392,6 +394,30 @@ void *rockchip_wifi_country_code(char *ccode)
 EXPORT_SYMBOL(rockchip_wifi_country_code);
 /**************************************************************************/
 
+static int rockchip_wifi_voltage_select(void)
+{
+    struct rfkill_wlan_data *mrfkill = g_rfkill;
+    int voltage = 0;
+
+    if (mrfkill == NULL) {
+        LOG("%s: rfkill-wlan driver has not Successful initialized\n", __func__);
+        return -1;
+    }
+    voltage = mrfkill->pdata->sdio_vol;
+    if (voltage > 2700 && voltage < 3500) {
+        writel_relaxed(0x00100000, RK_GRF_VIRT+0x380); //3.3
+        LOG("%s: wifi & sdio reference voltage: 3.3V\n", __func__);
+    } else if (voltage  > 1500 && voltage < 1950) {
+        writel_relaxed(0x00100010, RK_GRF_VIRT+0x380); //1.8
+        LOG("%s: wifi & sdio reference voltage: 1.8V\n", __func__);
+    } else {
+        LOG("%s: unsupport wifi & sdio reference voltage!\n", __func__);
+        return -1;
+    }
+
+    return 0;
+}
+
 static int rfkill_rk_setup_gpio(struct rksdmmc_gpio *gpio, const char* prefix, const char* name)
 {
     if (gpio_is_valid(gpio->io)) {
@@ -546,6 +572,8 @@ static int rfkill_wlan_probe(struct platform_device *pdev)
         gpio_direction_output(pdata->power_n.io, !pdata->power_n.enable);
     }
 
+    rockchip_wifi_voltage_select();
+
 #if BCM_STATIC_MEMORY_SUPPORT
     rockchip_init_wifi_mem();
 #endif